James,

Thank you. Max's heightmap program outputs the CurvesU and CurvesV in a line sequence while the ConvertPts component (CurvesU) outputs in XYZ-XYZ etc then draws a line back to the next XYZ step up from the far point. The CurvesV setting did not output anything.

ConvertPts might be updated to a new conponent ConvertPts2 for resequencing the points in a line order.
Unless there is an existing Node component that is being overlooked.

Wayne